57689966 has 12 divisors (see below), whose sum is σ = 91330272. Its totient is φ = 27326484.

The previous prime is 57689963. The next prime is 57689981. The reversal of 57689966 is 66998675.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57689963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39230 + ... + 40673.

It is an arithmetic number, because the mean of its divisors is an integer number (7610856).

Almost surely, 2^57689966 is an apocalyptic number.

57689966 is a deficient number, since it is larger than the sum of its proper divisors (33640306).

57689966 is a wasteful number, since it uses less digits than its factorization.

57689966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79943 (or 79924 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 56.

The square root of 57689966 is about 7595.3911025042. The cubic root of 57689966 is about 386.3967168840.

The spelling of 57689966 in words is "fifty-seven million, six hundred eighty-nine thousand, nine hundred sixty-six".